/*
 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 *
 *
 */


package com.sun.jmx.snmp.IPAcl;

// java import
//

import java.io.Serializable;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Hashtable;
import java.util.logging.Level;
import java.util.Vector;
import java.security.acl.NotOwnerException;

import static com.sun.jmx.defaults.JmxProperties.SNMP_LOGGER;

/**
 * The class defines an abstract representation of a host.
 */
abstract class Host extends SimpleNode implements Serializable {

  public Host(int id) {
    super(id);
  }

  public Host(Parser p, int id) {
    super(p, id);
  }

  protected abstract PrincipalImpl createAssociatedPrincipal()
      throws UnknownHostException;

  protected abstract String getHname();

  public void buildAclEntries(PrincipalImpl owner, AclImpl acl) {
    // Create a principal
    //
    PrincipalImpl p = null;
    try {
      p = createAssociatedPrincipal();
    } catch (UnknownHostException e) {
      if (SNMP_LOGGER.isLoggable(Level.FINEST)) {
        SNMP_LOGGER.logp(Level.FINEST, Host.class.getName(),
            "buildAclEntries",
            "Cannot create ACL entry; got exception", e);
      }
      throw new IllegalArgumentException("Cannot create ACL entry for " + e.getMessage());
    }

    // Create an AclEntry
    //
    AclEntryImpl entry = null;
    try {
      entry = new AclEntryImpl(p);
      // Add permission
      //
      registerPermission(entry);
      acl.addEntry(owner, entry);
    } catch (UnknownHostException e) {
      if (SNMP_LOGGER.isLoggable(Level.FINEST)) {
        SNMP_LOGGER.logp(Level.FINEST, Host.class.getName(),
            "buildAclEntries",
            "Cannot create ACL entry; got exception", e);
      }
      return;
    } catch (NotOwnerException a) {
      if (SNMP_LOGGER.isLoggable(Level.FINEST)) {
        SNMP_LOGGER.logp(Level.FINEST, Host.class.getName(),
            "buildAclEntries",
            "Cannot create ACL entry; got exception", a);
      }
      return;
    }
  }

  private void registerPermission(AclEntryImpl entry) {
    JDMHost host = (JDMHost) jjtGetParent();
    JDMManagers manager = (JDMManagers) host.jjtGetParent();
    JDMAclItem acl = (JDMAclItem) manager.jjtGetParent();
    JDMAccess access = acl.getAccess();
    access.putPermission(entry);
    JDMCommunities comm = acl.getCommunities();
    comm.buildCommunities(entry);
  }

  public void buildTrapEntries(Hashtable<InetAddress, Vector<String>> dest) {

    JDMHostTrap host = (JDMHostTrap) jjtGetParent();
    JDMTrapInterestedHost hosts = (JDMTrapInterestedHost) host.jjtGetParent();
    JDMTrapItem trap = (JDMTrapItem) hosts.jjtGetParent();
    JDMTrapCommunity community = trap.getCommunity();
    String comm = community.getCommunity();

    InetAddress add = null;
    try {
      add = java.net.InetAddress.getByName(getHname());
    } catch (UnknownHostException e) {
      if (SNMP_LOGGER.isLoggable(Level.FINEST)) {
        SNMP_LOGGER.logp(Level.FINEST, Host.class.getName(),
            "buildTrapEntries",
            "Cannot create TRAP entry; got exception", e);
      }
      return;
    }

    Vector<String> list = null;
    if (dest.containsKey(add)) {
      list = dest.get(add);
      if (!list.contains(comm)) {
        list.addElement(comm);
      }
    } else {
      list = new Vector<String>();
      list.addElement(comm);
      dest.put(add, list);
    }
  }

  public void buildInformEntries(Hashtable<InetAddress, Vector<String>> dest) {

    JDMHostInform host = (JDMHostInform) jjtGetParent();
    JDMInformInterestedHost hosts = (JDMInformInterestedHost) host.jjtGetParent();
    JDMInformItem inform = (JDMInformItem) hosts.jjtGetParent();
    JDMInformCommunity community = inform.getCommunity();
    String comm = community.getCommunity();

    InetAddress add = null;
    try {
      add = java.net.InetAddress.getByName(getHname());
    } catch (UnknownHostException e) {
      if (SNMP_LOGGER.isLoggable(Level.FINEST)) {
        SNMP_LOGGER.logp(Level.FINEST, Host.class.getName(),
            "buildTrapEntries",
            "Cannot create INFORM entry; got exception", e);
      }
      return;
    }

    Vector<String> list = null;
    if (dest.containsKey(add)) {
      list = dest.get(add);
      if (!list.contains(comm)) {
        list.addElement(comm);
      }
    } else {
      list = new Vector<String>();
      list.addElement(comm);
      dest.put(add, list);
    }
  }


}
